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Koehler, James S. Knodle, Walter St. Clare 2011-07-05T19:25:44Z 2011-07-05T19:25:44Z 10000-01-01 1976 Lead (99.9999% pure by weight) wires were quenched.in a low temperature (s35 K), low-pressure (10-100 bars absolute) helium atmosphere. Initial quench rates were between 1 and 3X10 4 °C/sec. The formation energy for a lattice vacancy was determined to be 0.54+0.02 eV and the resistivity for one atomic percent vacancies was found to be 2.8+0.1 po-cm. Annealing studies indicated that the vacancy behavior of lead is similar to other face-centered-cubic metals. Two annealing stages are observed. One stage near 170 K is attributed to the migration of vacancy type defects to clusters. A second stage at 330 K is associated with the dissolution of vacancy clusters and vacancy loops. Slope change measurements made at 140 K and 150 K indicate a divacancy migration energy of 0.45±0.04 eVe Anneals at 269 K and 322 K indicate a strong influence from impurities. A divacancy binding energy of 0.23+0.03eV is found. Good agreement with defect equilibrium concentration measurements and self-diffusion data is achieved. Submitted by Carolyn Mead (cmead2@illinois.edu) on 2011-07-05T19:25:44Z No. of bitstreams: 1 1976_knodle.pdf: 3417183 bytes, checksum: 590f48ffa3fa156e6a50253f610dadb9 (MD5) Made available in DSpace on 2011-07-05T19:25:44Z (GMT). No. of bitstreams: 1 1976_knodle.pdf: 3417183 bytes, checksum: 590f48ffa3fa156e6a50253f610dadb9 (MD5) Previous issue date: 1976 Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Carolyn Mead (cmead2@illinois.edu) on 2011-07-05T19:25:44Z Item is restricted indefinitely. Restriction data tranferred 2014-07-01T11:32:42-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: Thesis Thesis U of I Only 2448729 http://hdl.handle.net/2142/25665 en 1976 Walter St. Clare Knodle III lattice vacancie pure lead quenching annealing low-pressure helium atmosphere Quenching and annealing of lattice vacancies in pure lead Dissertation / Thesis text Physics Physics University of Illinois at Urbana-Champaign Dissertation Ph.D.